Though the cops were doing their jobs, and I'm sure they never gave a thought to it, they could have found a better place to set up their command post. They were five blocks away form the scene, so it's not like they had to set up there, it could have been any number of parking lots of closed businesses. With the influence Ollie wields, I'm sure they won't set up in the Gates Parking Lot again.
In that neighborhood, no doubt business was lost. I'm sure a good percentage of the population down there wouldn't come within a half mile of a Police cruiser if they can help it.